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Velocity of surface acoustic waves in metallised PE LiNbO3

Velocity of surface acoustic waves in metallised PE LiNbO3

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The velocity of surface acoustic waves in proton-exchanged 128°-rotated Y cut X propagation lithium niobate with a Cu or Al thin film deposited on the sample surface has been measured using acousto-optic techniques in a wide frequency range. The electrical and mechanical perturbations of the propagation surface introduced by the metal film affects the acoustic velocity, thus providing a mean for its accurate control.

Inspec keywords: interdigital transducers; metallic thin films; surface acoustic waves; ultrasonic velocity; acousto-optical effects; ion exchange; ultrasonic propagation; lithium compounds

Other keywords: Cu-LiNbO3; propagation surface; metallised PE LiNbO3; SAW velocity; electrical perturbations; Al-LiNbO3; X propagation; Y cut; proton-exchanged material; surface acoustic wave velocity; mechanical perturbations; acousto-optic techniques; Al thin film; Cu thin film

Subjects: General linear acoustics; Ultrasonics, quantum acoustics, and physical effects of sound; Sonic and ultrasonic transducers and sensors; Acoustic wave devices; Measurement of acoustic variables

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